Air filtration device



FIG. 1 is a top front right perspective view of an air filtration deviceof our new design.

FIG. 2 is a top front left perspective view thereof.

FIG. 3 is top back right perspective view thereof

FIG. 4 is a bottom back left perspective view thereof.

FIG. 5 is a front side elevational view thereof.

FIG. 6 is a back side elevational view thereof.

FIG. 7 is a right side elevational view thereof.

FIG. 8 is a left side elevational view thereof.

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines showing parts of the drawings are included toillustrate use and environment and form no part of the claimed design.

CLAIM The ornamental design for an air filtration device, as shown anddescribed.